... A554,A269 Grade:201,304,202,301,316,316L stainless steel pipes, seamless tubeStandard:ASTM,A554,A269Grade:201,304,202, ... ,76,81,102,114,133,141,159,219Square pipes-Outside dimentions(mm)12x12,15x15,17x17,18x18,19x19, ... 28x28,30x30,36x36,38x38,40x40,50x50,60x60,70x70,80x80Rectangular pipes-Outside dimentions(mm)20x10,23x11,24x12,25x13,28x13, ... ,50x15,50x25,60x15,60x30,73x43,75x45,95x45 stainless steel pipe